V39ZC20P

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TVS - Varistors, MOVs

Varistors, also known as Metal Oxide Varistors, are transient voltage suppression devices with high capacitance and low impedance. They are commonly found in many electronic circuits and are used to protect against over voltage and electrical spikes. The V39ZC20P is a varistor based on Zinc Oxide, and it is a surface mount type device.

The V39ZC20P consists of a ceramic disc with a Zinc Oxide material sandwiched between two electrodes. When there is a high voltage voltage surge, the Zinc Oxide material undergoes a number of changes in its structure and this leads to a decrease in electrical resistance. This results in the flow of high current which dissipates the excess voltage to the ground level.

The V39ZC20P is primarily used in automotive applications due to its small size, robust construction and high temperature threshold. It has also found use in other applications such as telecommunications, consumer electronics, general industrial equipment, lighting and security systems.

The primary principle behind the V39ZC20P is that of a Zinc Oxide surge arrester. The Zinc Oxide material provides a high dielectric withstanding voltage, so that it is capable of absorbing a high voltage surge without any damage. This allows the device to protect circuits from transient over voltages in applications such as automotive, telecommunications, lighting and many other industrial applications.

The typical operating voltage range of the V39ZC20P is 18V to 45V, and the peak pulse current is rated at 8kV. The voltage-current characteristics of this varistor are also very important, as these determine the peak current that the device can carry before it is damaged. The current-voltage characteristics also influence the noise generated by the device, so that it can be used safely in sensitive applications.

The V39ZC20P also has a good thermal reliability characteristic which makes it well-suited for applications exposed to high temperatures. The device is able to operate efficiently at temperatures up to 135°C, and it has maximum peak power dissipation of 5W.

Overall, the V39ZC20P is a very reliable, cost-effective and high-performance device that is suitable for a wide range of applications. It is well-suited for automotive, telecommunications, lighting, consumer electronics, and general industrial equipment. Its high voltage, surge current, transients capacitance, and thermal reliability characteristics make it a popular choice for many sensitive and cost-sensitive applications.

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